diff --git a/docs/Issue.md b/docs/Issue.md
index 2407cc6..cd73feb 100644
--- a/docs/Issue.md
+++ b/docs/Issue.md
@@ -24,6 +24,7 @@ Name | Type | Description | Notes
 **ref** | **String** |  |  [optional]
 **repository** | [**RepositoryMeta**](RepositoryMeta.md) |  |  [optional]
 **state** | **String** |  |  [optional]
+**timeEstimate** | **Long** |  |  [optional]
 **title** | **String** |  |  [optional]
 **updatedAt** | [**Date**](Date.md) |  |  [optional]
 **url** | **String** |  |  [optional]
diff --git a/src/main/java/org/gitnex/tea4j/v2/models/Issue.java b/src/main/java/org/gitnex/tea4j/v2/models/Issue.java
index 9fc94c9..4f21a4e 100644
--- a/src/main/java/org/gitnex/tea4j/v2/models/Issue.java
+++ b/src/main/java/org/gitnex/tea4j/v2/models/Issue.java
@@ -88,6 +88,9 @@ public class Issue implements Serializable {
   @SerializedName("state")
   private String state = null;
 
+  @SerializedName("time_estimate")
+  private Long timeEstimate = null;
+
   @SerializedName("title")
   private String title = null;
 
@@ -523,6 +526,25 @@ public class Issue implements Serializable {
     this.state = state;
   }
 
+  public Issue timeEstimate(Long timeEstimate) {
+    this.timeEstimate = timeEstimate;
+    return this;
+  }
+
+  /**
+   * Get timeEstimate
+   *
+   * @return timeEstimate
+   */
+  @Schema(description = "")
+  public Long getTimeEstimate() {
+    return timeEstimate;
+  }
+
+  public void setTimeEstimate(Long timeEstimate) {
+    this.timeEstimate = timeEstimate;
+  }
+
   public Issue title(String title) {
     this.title = title;
     return this;
@@ -629,6 +651,7 @@ public class Issue implements Serializable {
         && Objects.equals(this.ref, issue.ref)
         && Objects.equals(this.repository, issue.repository)
         && Objects.equals(this.state, issue.state)
+        && Objects.equals(this.timeEstimate, issue.timeEstimate)
         && Objects.equals(this.title, issue.title)
         && Objects.equals(this.updatedAt, issue.updatedAt)
         && Objects.equals(this.url, issue.url)
@@ -659,6 +682,7 @@ public class Issue implements Serializable {
         ref,
         repository,
         state,
+        timeEstimate,
         title,
         updatedAt,
         url,
@@ -691,6 +715,7 @@ public class Issue implements Serializable {
     sb.append("    ref: ").append(toIndentedString(ref)).append("\n");
     sb.append("    repository: ").append(toIndentedString(repository)).append("\n");
     sb.append("    state: ").append(toIndentedString(state)).append("\n");
+    sb.append("    timeEstimate: ").append(toIndentedString(timeEstimate)).append("\n");
     sb.append("    title: ").append(toIndentedString(title)).append("\n");
     sb.append("    updatedAt: ").append(toIndentedString(updatedAt)).append("\n");
     sb.append("    url: ").append(toIndentedString(url)).append("\n");